August is one of the warmer months of the year in Salem, with average highs near 36.8°C and lows around 21.2°C (mean 29°C). It is a relatively wet time of year, averaging 83 mm of rainfall and 68% relative humidity across the period.
August is one of the warmer months of the year in Salem. Across 45 years of records, the warmest August in Salem was 2023 — when the month averaged 31.3°C — while the coldest was 2022 at 27.7°C. Typical August days reach 36.8°C with nights near 21.2°C. The long-term August temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.9°C | 28.9°C | 29.1°C | 29.2°C | 28.9°C | 0°C |
| Avg High | 36.9°C | 36.8°C | 36.8°C | 37.1°C | 36.3°C | -0.6°C |
| Avg Low | 20.9°C | 21.1°C | 21.3°C | 21.3°C | 21.5°C | +0.6°C |
| Avg Rain | 69 mm | 74 mm | 77 mm | 92 mm | 111 mm | +41 mm |
August temperatures in Salem have stayed relatively stable across the record.
August has ranged from a record low of 20.2°C (2010) to a record high of 39.5°C (2023).
Rainfall in August is a relatively wet time of year, averaging 83 mm, with a wettest year of 188 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Salem
August is a good time to visit Salem, with days averaging 36.8°C and nights around 21.2°C (mean 29°C, warmer than Salem's yearly average) and higher rainfall. January and December are marginally more temperate, but August still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 37.5°C | 22.1°C | 29.8°C | 55 mm | 67% | 2.3 m/s | 4.9 |
| 2024 | 35.1°C | 21.6°C | 28.4°C | 175 mm | 78% | 2 m/s | 5.4 |
| 2023 🔥 | 39.5°C | 23.1°C | 31.3°C | 75 mm | 61% | 2.3 m/s | 5.7 |
| 2022 ❄️ 🌧️ | 34.7°C | 20.7°C | 27.7°C | 188 mm | 78% | 2.2 m/s | 5.1 |
| 2021 | 35.9°C | 20.6°C | 28.2°C | 78 mm | 71% | 2.4 m/s | 5.1 |
| 2020 | 35.3°C | 21.2°C | 28.2°C | 92 mm | 75% | 2.4 m/s | 5.1 |
| 2019 | 38.1°C | 21.0°C | 29.5°C | 129 mm | 71% | 3.2 m/s | 4.9 |
| 2018 | 37.2°C | 21.3°C | 29.2°C | 42 mm | 65% | 3.4 m/s | 4.8 |
| 2017 | 36.3°C | 21.7°C | 29.0°C | 103 mm | 72% | 2.3 m/s | 5.1 |
| 2016 | 37.5°C | 21.5°C | 29.5°C | 40 mm | 64% | 2.8 m/s | 5.9 |
| 2015 | 38.6°C | 21.0°C | 29.8°C | 71 mm | 63% | 2.5 m/s | 5.8 |
| 2014 | 35.8°C | 21.9°C | 28.8°C | 83 mm | 68% | 2.7 m/s | 5.3 |
| 2013 | 36.7°C | 21.4°C | 29.0°C | 120 mm | 69% | 2.7 m/s | 5.5 |
| 2012 | 36.9°C | 21.6°C | 29.3°C | 84 mm | 67% | 2.6 m/s | 5.3 |
| 2011 | 37.2°C | 21.1°C | 29.1°C | 93 mm | 68% | 2.8 m/s | 5.3 |
| 2010 | 36.9°C | 20.2°C | 28.6°C | 154 mm | 75% | 2.4 m/s | 5 |
| 2009 | 37.6°C | 21.3°C | 29.5°C | 64 mm | 67% | 2.7 m/s | 5.7 |
| 2008 | 35.6°C | 21.1°C | 28.3°C | 147 mm | 73% | 2.2 m/s | 5.4 |
| 2007 | 35.5°C | 21.2°C | 28.4°C | 112 mm | 73% | 2.5 m/s | 5.4 |
| 2006 | 38.4°C | 20.6°C | 29.5°C | 101 mm | 63% | 3.3 m/s | 5.7 |
| 2005 | 38.2°C | 22.1°C | 30.2°C | 70 mm | 61% | 3.1 m/s | 5.6 |
| 2004 | 37.1°C | 21.1°C | 29.1°C | 35 mm | 67% | 3.2 m/s | 5.7 |
| 2003 | 36.6°C | 21.6°C | 29.1°C | 99 mm | 71% | 2.7 m/s | 5.6 |
| 2002 | 37.4°C | 22.0°C | 29.7°C | 24 mm | 59% | 3.6 m/s | 5.4 |
| 2001 | 36.9°C | 21.3°C | 29.1°C | 46 mm | 68% | 3 m/s | 5.9 |
| 2000 | 34.9°C | 20.7°C | 27.8°C | 76 mm | 72% | 3.1 m/s | 5.2 |
| 1999 | 36.8°C | 21.2°C | 29.0°C | 43 mm | 65% | 2.7 m/s | 5.4 |
| 1998 | 35.7°C | 21.8°C | 28.7°C | 155 mm | 78% | 2 m/s | 5.5 |
| 1997 | 36.8°C | 20.8°C | 28.8°C | 43 mm | 64% | 3.4 m/s | 4.9 |
| 1996 | 36.6°C | 20.3°C | 28.4°C | 145 mm | 72% | 2.8 m/s | 4.9 |
| 1995 | 36.2°C | 21.6°C | 28.9°C | 92 mm | 71% | 2.6 m/s | 5.1 |
| 1994 | 37.7°C | 21.2°C | 29.4°C | 25 mm | 65% | 3.1 m/s | 5.1 |
| 1993 | 37.8°C | 21.1°C | 29.5°C | 51 mm | 66% | 2.9 m/s | 5.2 |
| 1992 | 37.1°C | 20.6°C | 28.9°C | 36 mm | 66% | 3.4 m/s | 5.1 |
| 1991 | 35.9°C | 20.8°C | 28.3°C | 77 mm | 68% | 3.1 m/s | 5 |
| 1990 | 37.7°C | 21.1°C | 29.4°C | 68 mm | 64% | 3.5 m/s | 4.9 |
| 1989 | 37.1°C | 21.0°C | 29.0°C | 24 mm | 62% | 3.5 m/s | 5.3 |
| 1988 | 35.8°C | 20.9°C | 28.4°C | 96 mm | 74% | 2.4 m/s | 4.6 |
| 1987 | 36.7°C | 21.1°C | 28.9°C | 70 mm | 67% | 2.6 m/s | 5.3 |
| 1986 | 37.1°C | 20.8°C | 28.9°C | 107 mm | 65% | 3 m/s | 5.4 |
| 1985 | 36.4°C | 21.1°C | 28.8°C | 83 mm | 66% | 2.9 m/s | 5.3 |
| 1984 | 37.4°C | 20.6°C | 29.0°C | 53 mm | 63% | 3.3 m/s | 5.8 |
| 1983 | 37.4°C | 21.0°C | 29.2°C | 65 mm | 66% | 3.1 m/s | — |
| 1982 | 38.6°C | 20.8°C | 29.7°C | 28 mm | 65% | 3.3 m/s | — |
| 1981 | 35.2°C | 20.5°C | 27.8°C | 99 mm | 71% | 3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 36.8°C with lows near 21.2°C (mean 29°C), based on 45 years of NASA POWER data.
August averages 83 mm of rainfall in Salem, a relatively wet time of year. The wettest on record was 188 mm in 2022.
The hottest August reached 39.5°C in 2023. The coldest dipped to 20.2°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.2°C. Daytime highs moved from 37°C to 36.5°C and overnight lows from 20.8°C to 21.6°C over the same span.
August is one of the warmer months of the year in Salem and a relatively wet time of year, so plan for around 36.8°C daytime highs and 21.2°C at night.
Not quite — August is the 7th coolest month in Salem, averaging 29°C.
For August in Salem, pack light, breathable clothing and sun protection, with typical highs of 36.8°C and lows of 21.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 68% — moderately humid.
Average wind speed in August is 2.8 m/s. The windiest August on record averaged 3.6 m/s (2002).
The wettest August on record was 2022 with 188 mm. On average, August sees 83 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Salem behaves each August, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for August specifically, along with year-by-year records and how the month has changed over the decades.
